Paint-mixing machine



(ModeL) t W. M. SHOEMAKER. Paint'Mixing Machine.

No. 236,366. Patented Jan. 4,1881.

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VILLIAM M. SHOEMAKER, OF PHILADELPHIA, PENNSYLVANIA.

PAINT-MIXING MACHINE.

SPECIFICATION forming part of Letters Patent No. 236,366, dated January 4, 1881.

Application filed May '1, 1880.

To all whom it may concern Be it known that I, \VILLIAM M. SHOE- MAKER, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented an Improvement in Paint-Mixers, of which the following is a specification.

My invention relates to mixing-machines in which a central shaft with mixing-blades is combined with a mixing'oylinder made in two parts; and the object of my invention is to so construct a machine of this class that part of the mixing-cylinder can be removed for cleansing purposes without disturbing the shaft and other parts of the structure.

In the accompanying drawings, Figure 1 is a vertical section of my improved paint-mixer, the detachable portion of the cylinder being removed, and Fig. 2 a perspective diagram illustrating my invention.

The cylinder A, for containing the paint, is made in two parts. the dividing-line preferably passing through the center of the cylinder, and the two parts being secured together by bolts passing throughthefour lugs a, which are cast on each part of the cylinder, at the points indicated in Fig. 1. The cylinder is closed at the bottom by a base, B, which is cast in one piece, and which rests on, and is secured in any suitable manner to, an appro priate foundation, I). One part of the cylinder is secured to the base B, the other part being attached solely to the permanent part, or, if it is attached to the base for additional security, it should be by appliances which will permit the ready releasing of the said detachable part of the cylinder.

G is a central vertical shaft, provided with horizontal mixing-arms b and scrapers d and e, which are common to other paint-mixing machines, and therefore need not be minutely described. The shalt has its lower bearing .in the base B, which is provided with an ordinary stuffing-bOX, f, to prevent the escape of the contents of the cylinder at the said lower bearing. The base B is made of the concave shape shown, and the lower scraper, e, is made to closely conform thereto, so as to secure the discharge of the entire contents of the mixer. The upper bearing of the shaft is in the crossbar E, which should be so bolted to the cylin- (Model) der that it will present no obstacle to the removal of the detachable portion of the same.

It has not been deemed necessary to illustrate or describe the gearing through the medium of which the shaft G is driven, for gearing of different styles may be adopted. In some cases, for instance, gearing may be adapted to the driving of the shaft above the cylinder, and in other cases the shaft may be driven from below, as the location of the mixer in the mill in respect to the driving power may suggest.

It will be understood that there is a suitable opening in the base for the discharge of the mixed paints.

In ordinary paint-mixers of the class to which my invention relates the cylinder is made in one piece; hence the operation of cleaning it after paint of one color has been mixed, preparatory to the mixing of paint of another color, is a very tedious operation, the mixingarms being in the way and access to the interior of the cylinder being difficult for cleansing purposes, even if the shaft and mixing-armsbe removed, and to do the latter necessarily consumes much time.

By making a part of the cylinder laterally removable, however, the facilities for cleansing are much increased, for not only is the interior of both parts of the cylinder exposed, but the shaft can be turned to any position which a proper cleansing of the arms and scrapers may suggest as the most convenient; at the same time the removal of the detachable portion of the cylinder in no way disturbs the integrity of the machine, for the base B is permanent. There is a permanent portion of the cylinder secured to the base, and the shaft is carried by bearings, forming a permanent portion of the structure; or the upper bearing of the shaft may be on any fixed object attached to or forming part of the building in which the mill is situated.

A cylinder made in two parts has heretofore. been combined with a mixing-shaft, but in such a manner as to release the said shaft when part of the cylinder has been removed; whereas the aim of my invention has been to so construct themachinethat partot' the cylinder can be removed without disturbing the shaft or otherwise interfering with the general structure.

I claim as my invention The com bination,in a paint-mixing machine, of a cylinder, A, made in two parts, one fixed, the other removable, the mixing-shaft G, the base B, cast in one piece, and having a central stuffing-box bearing for the lower portion of the shaft, and the bearing E for the upper part 10 of the shaft, the said bearings being independent of the removable portion of the cylinder, all subst ntially as set forth.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing Witnesses.

XV. M. SHOEMAKER.

Witnesses JAMES F. 'loBIN, HARRY SMITH. 

